Because new api already exists in libraries, but FilePath from base is still being used, which makes things worse (now your programs have all those conversions all over).
I like the idea with gradual deprecation warning, but it's not clear if it's feasible to implement.
Hi!
Instead of trying to minimally patch the existing API and still breaking loads of code, why not make a new API that doesn't have to compromise and depreciate the old one?
Niklas-----BEGIN PGP SIGNED MESSAGE-----
Från: Herbert Valerio Riedel
Skickat: 2015-06-26 18:09
Till: libraries@haskell.org; ghc-devs@haskell.org
Ämne: Abstract FilePath Proposal
Hash: SHA1
Hello *,
What?
=====
We (see From: & CC: headers) propose, plain and simple, to turn the
currently defined type-synonym
type FilePath = String
into an abstract/opaque data type instead.
Why/How/When?
=============
For details (including motivation and a suggested transition scheme)
please consult
https://ghc.haskell.org/trac/ghc/wiki/Proposal/AbstractFilePath
Suggested discussion period: 4 weeks
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